There are tons of lakes in Oklahoma. In Tulsa you will be close to Lake Grand, Lake Eufaula and Lake Tenkiller. Those lakes are fairly close and there are tons more in central and Southern Oklahoma. My favorite lake is Arbuckle Texoma and Eufaula. I went to the lake pretty much every weekend last summer. What a blast!
Keystone Lake is just west of Tulsa. It's a pretty good sized lake and I saw a few guys on the water there this summer that were pretty good. I wasn't one of them. It's a hell of alot nicer than anything we've got here in Kansas.
I've been going to lake Eufuala since I was born. My mom and grandpa both have spots on the lake. It's awesome down there. Plus, they hold the southern plains festival down there. The biggest wakeboarding event in Oklahoma. There are a bunch of spots for good boarding. Hit me back if you have more questions about it. I usually don't go around here just because the boats I ride behind our down there. I have been to Oologah lake a few times. It's really nice. I went to high school there and it's a pretty lake.